Multi-cone earplug

Details Multi-cone earplug Multi-cone earplug

1992-10-15

1996-08-13

Zarfas, Louis S.

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

Patent

active

D03727769

REFERENCES:
patent: D195322 (1963-05-01), Hill
patent: D253723 (1979-12-01), Leight
patent: D273614 (1984-04-01), Rolla
patent: D298356 (1989-11-01), Falco
patent: 4219018 (1980-08-01), Draper, Jr.
patent: 4936411 (1990-06-01), Leonard
The Lab Safety Supply Catalog "Hearing Protection" p. 159 .COPYRGT.1990.

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